Its dynastic head, Albert II, utilises the same arms borne by his ancestors.

These reflect the original conquest of Monaco by the Grimaldi family.

[1] In full, it is defined as:[2] The shield lozengy argent and gules, surrounded by the collar of the Order of Saint-Charles, is placed on a red coat lined with ermine, surmonted by the princely crown.

Supporters: Two Friars Minor hairy, bearded and wearing shoes, each of them holding a raised sword, standing on a scroll charged with the motto: DEO JUVANTE (with God's help).The motto, Deo Juvante, dates back to Lambert Grimaldi d'Antibes (1420–1494).

[4] The civil flag utilises red and white, the heraldic colours of the House of Grimaldi.